NVU GENII programmable tachometers are the most flexible instruments available today. Easily programmed to any input pulse count. Can be used on any ignition system: points, electronic, PCM, CDI, MSD, alternator, crank trigger, anything that sends a signal. Simply set the pulses per revolution and the tach is set for your application. LED backlighting for easy viewing at night. User settable outputs for shift lamps and triggers are also included. Includes: 3-3/8Â? tachometer, spin-on back clamp, programming button, detailed instructions, wiring harness and plug.